Bobbin replenishing mechanism for looms



June 6, 1950 B. A. PETERSON I 2,510,348

BOBBIN REPLENISHING MECHANISM FOR Looms 7 Sheets-She et 1 Filed Dec. 16, 1947- INVENTOR. Burt A. Peterson ATTORNEYS June 6, 1950 B. A. PETERSON ,5

BOBBIN REPLENISHING MECHANISM FOR LOOMS Filed Dec. 16, 1947 7 Sheets-Sheet 2 .JNVENTOR. Burt A. Peterson AT TORNEYS June 6, 1950 B. A. PETERSON 2,

BOBBIN REFLENISHING MECHANISM FOR LOOKS Filed Dec. 16, 1947 7 Sheets-Sheet} INVENTOR.

Burt A. Peterson BY ATTORNEYS June 6, 1950 a. A. PETERSON BOBBIN REPLENISHING MECHANISM FOR LOOMS 7 Sheets-Sheet 4 Filed Dec. 16, 1947 Burt A. Peterson.

BY zulh fgmf M-/.w d

m m m m ATTORNEYS June 6, 1950 B. A. PETERSON eoasm REPLENISHING MECHANISM FOR LOOMS 7 Sheets-Sheet 5 Filed Dec. 16, 1947 INVENTOR. Burt A. Peterson ATTORNE Y6 Jun 6, 1950 B. A. PETERSON 2,510,348

\ BOBBIN REPLENISHING MECHANISM FORLOOMS File d' Dec. 16, 1947 7 Sheets-Sheet 6 JNVENToR. Burt A. Peterson ATTORNEYS June 6, 1950 Filed Dec. 16, 1947 B. A. PETERSON 1 ,3 8

sossm mamznxsnmc MECHANISM FOR LOOMS 7 Sheets-Sheet 7 ATTORNEYS Patented June 6, 1950 PATENT OFFICE BOBBIN REPLENISHING MECHANISM FOR LOOMS Burt A. Peterson, Rockford, 111., assignor to Barber-Colman Company, ration of Illinois Rockford, Ill., a corpo- Application December 16, 1947, Serial No. 791,960

28 Claims. (Cl. 139-245) The invention pertains to a mechanism for delivering wound bobbins automatically to a weft replenishing loom, and has especial reference to a replenishing mechanism of the type in which the bobbins are individually supported upon carriers of the pin board type and transferred from such carriers automatically and successively to the loom shuttle.

Weft replenishing looms are commonly prowhich rack is especially constructed for use with bobbin carriers of the pin board type and operative to disengage the bobbins from the individual holding pins and thence to move the bobbins successively into a predetermined loading position with respect to the magazines.

The objects of the invention thus generally set forth, together with other and ancillary advantages, are attained by the construction and arvided with means for supplying wound bobbins rangement shown by way of illustration in the to the shuttle, such means including a rotary carrier or magazine containing a supply of wound bobbins, in combination with means responsive to the exhaustion of the bobbins in the operation of the loom to remove a wound bobbin from the embodying my invention.

magazine, deliver it to the shuttle and at the same time eject the exhausted bobbin from the shuttle.

One object of the present invention is to proaccompanying drawings, in which:

Figure 1 is a fragmentary end elevational view of the weft replenishing side of a loom equipped with a bobbin supply and replenishing mechanism Fig. 2 is a fragmentary horizontal sectional view takenapproximately in the plane of line 2-2 of Fig. 1 but on a larger scale.

Fig. 3 is a fragmentary section taken approxivide an improved mechanism for delivering wound mately in the plane of line 3-3 of Fig. 1 and also bobbins to the rotary carrier or magazine permitting the use of bobbin carriers of the pin board type in which the individual holders are in the form of pins on which the bobbins are removably supported.

Another object is to provide an improved driving and control mechanism having a disengageable clutch connection with the loom drive under the control of the usual detector mechanism for on a larger scale.

Fig. 4 is a similar view taken in the plane of line 44 of Fig. 1.

Fig. 5 is a fragmentary perspective view showing the construction of the loading rack and showing especially the mounting of the bobbin holders thereof upon a slide s hiftable transversely of the rack into position to receive a row of bobbins from the pin board and thence reversely to the purpose of initiating successive bobbin redisengage the bobbins from the pin board.

plenishing cycles.

A further object is to provide in combination with the cycle initiating means aforesaid, means for effectually controlling the various operating parts of the mechanism and including in particular means operative in a plurality of successive cycles corresponding in number to the number of bobbins in each row of holders on the bobbin/ board to deliver such bobbins to the rotary car rier or magazine.

Still another object is to provide in a bobbin replenishing-mechanism of the character above set forth, a bobbin rack having an initially retracted position with respect to the rotary maga- Fig. 6 is a fragmentary perspective view illustrating the construction of the bobbin holders of the rotary magazine.

Fig. 7 is a'fragmentary side elevational view showing the cycling and control means, the supporting shafts being shown in section.

Fig. 8 is a fragmentary elevational view of a pin board indexing mechanism employed in the machine.

Fig. 9 is a schematic view irte form of a time chart showing the various operating cams and their relation to each other.

Referring to Fig. 1 of the drawings, I have shown for purposes of illustration a loom equipped zine in which position it is adapted to receive a with a rep e g mechanism embodying y row of wound bobbins from a bobbin carrier such as a pin board, together with control means operative in each of a plurality of successive cycles to deliver bobbins to the magazine successively invention. This mechanism includes a rotary bobbin carrier or magazine I 0 of the usual type having a plurality of peripherally spaced bobbin holders II for the reception of wound bobbins b.

and in the last of such cycles to return the rack The magazine is mounted for rotation on a shaft to its initial position for the reception of a new supply of bobbins.

A further object is to provide in a loom replenishing mechanism a bobbin loading rack for del2 and bobbins supplied to the magazine are successively presented to a predetermined delivery position DP where they are operated upon by a conventional ejector l3 mounted upon an arm I livering wound bobbins to the rotary magazine which is pivoted on the loom frame. The arm l4 is arranged for actuation by the loom lay l under the control of a detector mechanism of conventional construction including a pivoted dog i6 responsive to the breakage or exhaustion of the thread. The lay |5 carries the usual bunter H with respect to which the dog I6 is pivoted. Upon exhaustion or breakage of the thread, the dog moves into blocking relation to the hunter for actuation thereby. As shown, the dog is pivotally supported upon an arm l8 rigid with a rockshaft [3 which "in turn is jo'urnaled in a stationary frame member 20. The arm I8 is connected by a link Ida with the ejector arm |4 so that when the dog'is positioned in the path of the hunter the latter is rendered effective to actuate the ejector arm M. The bobbin ejecting means and its associated detector means cooperate to remove a spent bobbin from the shuttle and to transfer thereto a new bobbin from the magazine. Such means may therefore be said to constitute in general terms a. bobbin change mechanism.

In accordance with my invention, wound bobbins are transferred from bobbin carriers C to the holders H of the magazine In by means of a reciprocatory loading device in the form of a rack 2| having a series of bobbin receptacles or pockets 22. The rack is mounted for movement relative to the magazine on the one hand and the carriers C on the other so as to be capable of receiving a row of bobbins from a carrier and then present them successively to a loading position LP where they are engaged and held by the bobbin holders ll of the magazine. The bobbin carriers C are preferably of the pin board type, providing a plurality of rows of ins 23 (Fig. 4), there being, as shown, five pins in each row. To support the pin boards, the frame of the machine is constructed to provide a siideway generally designated 24.

In the present embodiment of the invention, the rack 2| is mounted for movement radially of the magazine i0 and the siideway 24 is positioned so as to support the pin boards with the rows of bobbins on the pins 23 parallel with the rack at one side thereof. The pin boards are supported in a plane laterally offset (rearwardly as shown in Fig. 1) from the plane of the magazine and the rack is especially constructed so that when in its retracted position with respect to the magazine it is capable of being shifted transversely from its path of endwise reciprocation into position beneath the lowermost row of pins 23, and then, upon the advance of the lowermost row of pins into their respective receptacles 22, reversely so as to disengage the bobbins from the pins preliminary to the advance of the rack in carrying the bobbins successively into the loading position. Having in view the general construction and arrangement thus described, the improved replenishing mechanism further comprises a driving and control mechanism initiated in operation in response to the breakage or exhaustion of the thread and operative in each of a plurality of successive cycles (corresponding in number to the number of bobbins in each row on the pin board) to advance a bobbin receptacle 22 on the rack 2| to the loading position LP and in the last or fifth of such cycles to return the rack to an initial or retracted position; and it further includes means operative to shift the rack transversely into position to receive a row of bobbins from a pinboard, index the pin boards to deliver bobbins to the rack and then shift the rack reversely to disengage the bobbins from their respective pins for subsequent transfer to the magazine.

Coming now to a more detailed consideration of the construction employed in the present illustrative embodiment of the invention, the megazine I0 comprises a disk 26 having a series of equidistantly spaced radial arms 21 to each of which is secured a bobbin holder II. As shown in Fig. 6, the latter is in the form of a U-shaped member 28 having opposed spring fingers 29 recessed at 30 to receive the conventional wire rings 3| (Fig. 4) on the butt ends of the bobbins. Thus the clips open radially outward so as to be capable of receiving the butt ends of the bobbin as the latter are moved radially inward by the rack 2|.

Referring nowtoFigs. 1, 4 and 5, the rack 2| comprises a bar 32 carrying a plurality of blocks 33 coacting to form the bobbin receptacles or pockets 22 adapted to receive the butt ends of the bobbins b. The bar 32 forms the rear end member of a rectangular frame or cross slide 34 having side bars 35 and mounted on a longitudinal slide member 36. The latter is supported for movement radially of the magazine on a stationary frame bracket 31 constructed to provide ways 38 for the member 36. Rigid with the member 36 and perpendicular thereto are spaced parallel arms 39 providing ways 40 for the reception of the frame bars 35.

It will be seen that by this construction the rack 2| is mounted both for radial movement with respect to the magazine and also for movement from a position in which the pockets 22 are disposed in the plane of the magazine transversely into underlying relation to the lowermost row of bobbins supported on the pin boards C. In this position, the pockets 22 are adapted to receive the butt ends of the bobbins, and upon return into the plane of the magazine disengage the bobbins from the pins 23.

It will be observed from Fig. 5 that the blocks 33 which coact to form the bobbin pockets 22 are provided with recesses 4| shaped to hold the bobbins against axial movement in the pockets. To support the tip ends of the bobbins when thus resting in the pockets 22, the cross slide 34 further includes a front member 42 (Fig. 4) connecting the members 35 and provided with a notched angle plate 43 with notches 43(Fig. l) to receive the tips of the bobbins.

Referring now to Figs. 4 and 8, the siideway 24 for the bobbin board 0 comprises a pair of parallel bars 44 constructed to provide ways 45 for the edgw of the pin boards C. These bars 44 are suitably mounted on the stationary frame 20 and are so positioned as to guide the in boards in a direction perpendicular to the rack 2|. The angle of the rack is so chosen that the slideway 24 is inclined from the horizontal sufllciently to cause the pin boards to move downwardly by the action of gravity.

The driving and control mechanism governing the replenishing operation comprises in the present embodiment of myinvention a shaft 46 (Fig. 3) hereinafter termed the main cam shaft having an operating cycle timed with respect to the loom and serving principally to govern the indexing of the magazine ill. It has a disengageable driving connection with the loom shaft 41 (Fig. 1) effected by means including a clutch 48 (Figs. 2 and 3) operative in response to the breakage or exhaustion of the thread to initiate the operating cycle.

The driving and control mechanism further includes a shaft 49, hereinafter termed the auxiliary cam shaft, driven from the shaft 46 but at a reduced speed and having for its primary function the advance of the bobbin rack 2| from its imtial at the end of the last advancing movement. In

the present instance the shaft 49 has a speed ratio of five to o e with respect to the shaft 46 so that theishaft 4 rotates through one-fifth of a revolution for each complete revolution of the main cam shaft 46, it being observed that the five to one speed ratio is determined by the number of receptacles 22 in the rack 2|. I

' The clutch 48 (Figs.'2 and 3) comprises in the present instance a shiftable clutch element 56 aplined on the shaft 46, and a driven element ll mounted for rotation relative to the shaft and the she. t and connected by a chain 58 with a sprocke sjLationary clutch element 55 rigid with a frame bracket 56 "is engageablenby the shiftable clutch element 56 upon disengagement from the driving element 5| so as to stop the shaft 46 in a predetermined position.

. Engagement of the clutch to initiate an operating cycle in response to the breakage or exhaustion of the bobbin thread is effected by a clutch shifting mechanism arranged for actuation in one direction by the loom lay to effect engagement of the clutch, locked in clutch engaging position; and

released for return and disengagement ofthe clutch after a predetermined operating cycle, herein one revolution of the main shaft 46. Said shifting mechanism comprises a bell crank 51 (Fig. 2) arranged for actuation in the present instance by a coiled spring 58 under the control or a shifter bar 59 operatively associated with the loom lay through the medium of the pivoted detector dog l6 mounted on the rockshaft |9(Figs. 1 and 7). v The bar 59 has a pin and'slot connection 66 with an arm 6| rigid with the rockshaft l9 and is provided with a retracting spring 62. When the rockshaft i9 is operated by the lay bunter l1 coacting with the dog Hi, the bar 59 is shifted in a direction (to the right, Figs. 2 and '7) to permit movement of the clutch shifting bell crank 51 by its spring 58. The bar 59 has a slot 68 therein for receiving one arm 64 of the bell crank 51 so that when the bar 59 is shifted to the right the bell crank is free to rock under the force of the spring 58, the slot 63 being of sufficient length to permit of a slight overtravel of the bar after engagement of the clutch for a purpose which will presently appear.

The latch means for holding the clutch engaged for a predetermined cycle of the main shaft 46 A comprises in thepresent instance a latch member (Fig. 7) engageable with a notch 66 in the upper edge of the bar 59. The latch 65 is fixed on a rockshaft 61 and urged by a coiled torsion spring 88 for movement into engagement with the notch. The ,latch 66 has a dog 69 thereon which rides upon the upper edge of the bar so as to-enter the notch 65 as the bar is shifted in the operation of the rockshaft l9.

The clutch engaging movement of the bar occurs against the action of the retracting spring 62 which is" made sufiiciently stronger than the clutch spring 58 to be able to disengage the clutch upon release of the shifter bar by the latch 65. Such release of the latch occurs at the end of one revolution of the shaft 46 by the action of a cam It on the shaft 46 coacting with a roller follower H on an arm 12 rigid with the-latch member 65.

the rockshaft I9 is, permitted to returnwith the return movement of the lay by reason of the pin and slot connection 60 between thearm 6| and the shifter bar 59.

The auxiliary cam shaft 49 is driven from the main cam shaft 46 through a gearing connection comprising a spur pinion 18 (Figs. 1 and 3) on the main cam shaft meshing with a spur gear 14 fast on the auxiliary cam shaft 49. As shown (Fig. 3) the gear 14 is mounted upon the hub of a barrel cam 1-5 which is keyed to the shaft 49. The barrel cam is keyed to the shaft 49 and is pinned together with a disk cam 16 to the spurgear 14.

The barrel cam 15 forms a part of a mechanism for actuating a thread end finder as will presently be described, and the cam 16 serves to control the advancing and retracting movements of the bobbin rack 2|. As shown in Fig. 7, this lat: ter cam acts to shift th rack 2| by means of a gear segment 'I'l mounted on a rockshaft18 upon which is secured a second arm I9 carrying a roller follower 86 for coaction with the cam. The shaft I8 is mounted on the frame bracket ill, and a coiled torsion spring 82 acting between this bracket and the shaft tends to hold the roller follower 86 against the cam. The segment 11 meshes with a rack bar 83 rigid with the longitudinal side bar 36 (Fig. 3), and the arrangement is such that in the rotation of the cam I6 in a counterclockwise direction (Fig. '7) the rack 2| is advanced with a step-by-step motion through five successive steps and then returned by the spring 82 under the control of the cam into its retracted position with respect to the magazine.

As shown in Fig. 7, the cam I6 is divided into five equal segments. Four of the segments provide dwell surfaces '84, 84a, 84b and 840 followed face 86c. For each revolution of the main cam shaft 46, and therefor once in each cycle of the replenishing mechanism. the cam 16 is rotated through one-fifth of a revolution, and in each cycle the rack is advanced a distance corresponding the pitch of the bobbin receptacles 22 of the rack 2|. rack dwells momentarily while the magagine is indexed as hereinafter set forth, and then permitted to return to its initial position by the action of the spring 92.

Upon such return of the rack to its initial position, the cross slide 34 is actuated to effect the transfer of the lowermost row of bobbins from the lowermost pin board to the bobbin receptacles 22 of the rack.v This is accomplished by means of a cam 81 (Fig. 7) fast on the main cam shaft 46 and acting upon a roller follower 88 carried by a rocker arm 89 which is connected by means of a. link 98 with a bell crank 9| (Fig. 3) operatively associated with the cross slide 34. The bell crank 9| is mounted on a rockshaft 92'suitabiy supported on a frame bracket 93 and is urged by a torsion spring 93a ini-a direction to hold the follower 88 against the cam 81. The bell crank has one arm 94 connected with the link and two arms 94a (see Fig. 1) formed with notches 95 in their free ends for coaction with two lugs 98 rigid with the cross slide. Notwithstanding the fact that the cam 81 is on the main cam shaft 46 and therefore serves to actuate the bell crank 9| oncein each operating cycle, the'cross slide 34 is nevertheless actuated only in one of these cycles, namely, in the last of the five cycles above At the beginning of the fifth cycle, the

that the lugs are of such length as to be re-.

ceived in the notches of the bell crank arms a onl when the rack occupies its retracted posi-' tion. In all other operations of the bell crank, the lugs 00 are disengaged from the arms a so that the bell crank is ineffective, operating through idle strokes. In any case, the timing of the operation of the bell crank is such as to occur at the time that the rack 2I is stationary due to the eneasement of the roller follower 00 with one of the dwell surfaces, the dwell being of suilicient length to provid for thetransverse shifting movement of the rack, the indexing of the bobbin carriers (to be described presently) and the reverse movement of the cross slide, in which latter movement the lowermost row of bobbins is disengaged from their respective pins 20 on the bobbin carriers or pin boards C.

The cross slide 34 is yieldably held in the posi-. tion shown in Fig. 4 in which the bobbin pockets are alined with the magazine. For this purpose, one of the way members 39 for the cross slide is formed with a slot 91 for the reception of a pivoted dog 08 yieldably held by a spring 00 in engagement with a notch I00 in the adjacent frame member 35 of the cross slide. Th edge of the notches I00 are inclined so as to permit the dog to yield with a cam action when positively moved by the cam 01.

Referring now to Fig. 8, means is'provided for controlling the indexing of the pin boards C in their slideway 24. As above indicated, the slide way is inclined sufilciently to cause the pin boards to descend therein by the action of gravity. Ac-

cordingly, the indexing control operates in the one-way connection with th finger IOI for withdrawal thereby but is independently movable into active position. Thus the finger IOI carries a pin I04 engaging with a lug I05 rigid with the finger I02 and the finger I02 is urged by a leaf spring I01 in the direction of the pin board. The finger IOI is connected by a link I08 to one arm I09 of a bell crank H0 having a second arm III equipped with a roller follower engaging a cam II2 on the auxiliary cam shaft 49. The operation is as follows: 7

When the bobbin rack 2I has been shifted transversely by its camv 81 into position beneath the lowermost row of bobbins, a recess 20 in the cam H2 permits movement of the bell crank IIO by a spring H3, forcing the releasin finger IOI inwardly into an awaiting notch I03 and simultaneously withdrawing the positioning finger I02 from another notch I03. The width of the notche I03 is somewhat greater than the corresponding width of the end portion IOIa of the finger IOI so that immediately upon the release of a pin board by the finger I02 the pin board will advance a distance 'suflicient to carry the notch then opposite the finger I02 beyond the latter. As a result, the finger I02 will engage with the edge of the pin board so as to ride thereon in the ensuing indexing movement of 8 the board incident to the withdrawal of the finger III by the cm 2. It will be observed that when the finger III is then withdrawn the finger I02 is urged by its spring I01 against the pin board so as to enter the next notch I00 and thus interrupt the downward movement of the board to complete the indexing operation.

Upon the delivery of the lowermost row of bobbins to the rack2l, the cam 01 operates upon the bell crank 0| to return the rack into the plane of the magazine, and in the ensuing cycle of the main cam shaft the rack is advanced one step by the cam I0 to deliver the first of the bobbins in the lowermost row to an awaiting holder I I of the magazine I0. I

It will be understood that the magazine I0 is indexed in timed relation to the movements of the rack 2i for the purpose of removing bobbins from the rack and carrying wound bobbins into the delivery position DP. Such indexing movements of the magazine I0 occur at the beginning of each cycle of the main cam shaft 46 and is accomplished in the present instance .by an intermittent gear drive (Fig. "7) comprising a toothed gear in fast on the shaft 46 and a notched gear I' I5 fast on the magazine shaft I2.

After the movement of a bobbin into the delivery'position, the end of the thread on the bobbin is seized and held by an end finder III. As shown in Fig. 2 of the drawings, this finder comprises a sleeve I" mounted upon a rod 0 suitably supported on the machin frame. At the forward end of the sleeve in laterally offset relation thereto isa finder tube 0. The tube is supported on an arm I20 rigid with the sleeve and carries a plurality of spring fingers IISa operative when the tube is moved axially over the tip end of the bobbin b to seize the end finder coil b' thereof and to withdraw it from the bobbin. The means for actuating the sleeve I I1 comprises an arm I2l having a pin and slot connection I22 with the sleeve II! and arranged for actuation by the barrel cam I5. The arm "I is pivoted between its ends on a pivot pin I23 carried by a bracket I24, andthe end of the arm opposite the sleeve carries a roller follower I25 for engagement with the cam I5. The latter being mounted upon the auxiliary cam shaft 49 as above described, has a series of circumferentially spaced cam lobes I26 one of which is operated in each- I5 is commencing its return stroke. To insure I groove I29 in the supporting rod III. The cam,

is so shaped that after the initial portion of the movement of the arm I2I (see broken lines in Fig. 2) a rotational movement is imparted to the sleeve III in the direction of movement of the lay.

The operation may ncw be summarised. having; reference to the time. chart-shown-in Fig. 9.

wherein the various operations are related'to the main cam shaft cycle.

Assuming that the bobbin rack a has been adva'ncedthrough its full range of movement so that the uppermost pocket 22 occupies the loadtion of the clutch shifting bar I! (Fig. '1) Upon,

such actuation ofthe bar, the latch 6! becomes effective to hold the bar and therefore the clutch in its engaged position with the result that the cam shafts l6 and 49 are set in motion.

In the-initial portion of the cycle (twenty degrees of rotation) while the roller follower "isin engagement with the dwell surface 86 of the cam 18, an indexing motion is imparted to the magazine by the intermittent gearing III, III

to carry a filled bobbin into the delivery position -dred sixty-five degrees and terminates 1o 'boardandpocitioninsthorackinalinementwith themagazine. I

The transverseshift of the cross-slide'having occurred while the rollerfollower 80 engages the dwell surface 866 of the cam It, the bobbin'rack cam It now becomes effective near the-end of this cycle to advance the rack-2l one step. This occurs as the roller follower I is engaged by the rising cam surface lie, the follower coming to rest upon the following dwell surface 84 of-th'ccam. As shown in the time chart, such advancing movement of the rack commences at two hunhundred sixty degrees.

The cycle is terminated by the latch cam ll acting upon the latch 65 to disengage. it from the. clutch shifter bar 59. The bar 1,8 thus released tothe action of its spring 62 so/as to eil'ect disengagement of the clutch sleeve/til from the driving element and engagement-bf such sleeve with the stationary element 55,- thereby brin ing the mechanism to rest.

In the four succeedingcycles of the replenish- I ing mechanism, the operation is repeated except DP. Thereupon, the cam It effects the return of the bobbin rack 2| to its initial retracted position. This occurs as shown in the time chart in the next one hundred seventy-five degrees of rotation of the main cam shaft during which the roller follower 80 coacting with the sloping cam surface 88a permits movement of the rack I2 by its spring 82 in a direction and to the extent necessary'to return the rack to its initial position. At the end of the return stroke, the follower Y engages with a short dwell surface 86b, herein of a length corresponding to seventy degrees of rotation of the main cam shaft.

While the rack 2| dwells in its returned position, the cam 01 becomes effective to reciprocate the cross slide 34. In this operation, the roller follower 88 is urged by the bell crank spring 93a into the recess 81a of cam 31 so as to impart to the slide a short transverse movement sufiicient to carry it from'the plane of the magazine later ally into position beneath the lowermost row of bobbins on the pin board. The cam is rendered effective to cause such shifting movement of the cross slide due to the fact that in the retracted position of the rack the lugs 96 thereon are received within the notched ends of the bell crank arms 94a.

The shape of the recess 81a is such as to cause the cross slide to dwell momentarily in its shifted position, this dwell occurring during a twentyfive degree rotation of the main cam shaft. During such dwell, the bobbin board index cam H2 (Fig. '8) becomes effective to cause the advance of thebobbin board one step or suflicient to carry the lowermost row of bobbins into the awaiting pockets 22 of the rack 2|. In this operation, the

that the cam 8! is rendered inefl'ective to actuate the cross slide, due to the fact that the lugs 88 on the slide have been moved out of alinement with the notched arms 94a. Ineach ofsuch stepping movements, the rack is advanced after a preliminary dwell by the coaction of the roller follower 80 with one of the cam surfaces 85. The I rising cam surfaces 85, a, 85b and Bio are somewhatsteeper than the surface 860 so that each of the four successive advancing movementsoccur as shown in the time chart in the rotation of the main camshaft from three hundred five degrees to three hundred sixty degrees. Following each advance and throughout the remainder of the cycle of the main cam shaft, the rack is held stationary. e

During each of the five cycles, the end finder the tube to move laterally and follow the movement of the lay which at this time has commenced its return stroke.

I claim as my invention:

1. In a bobbin replenishing mechanism for looms having a drive shaft and a detector mechanism responsive to the exhaustion of the shuttle bobbin, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a reciprocatory loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine step-by-step and for advancing said loading device to deliver bobbins one-by-one to said magazine, said driving and control mechanism comprising a driven shaft having a disengageable clutch connection with said loom shaft, means controlled by said detector mechanism for engaging said clutch, and means on said shaft for effecting the disengagement of said clutch.

2. In a bobbin replenishing mechanism for looms having a drive shaft, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon and movable step-by-step to carry said holders into and out of a predetermined loading position successively, a reciprocatory loading device having a series at three u of bobbin receptacles supporting a row of bobbins, and a driving and control mechanism for eifecting the advance of said loading device step-bystep and to carry said bobbins one-by-one to said loading position and for returning said device to its initial position following delivery of the last bobbin in the row to the magazine, said driving and control mechanism having a disengageable clutch connection with said loom shaft.

3. In a. bobbin replenishing mechanism for looms having a drive shaft and a shuttle change liver bobbins one-by-one to the magazine and returning the loading device to an initial retracted position, said driving and control mechanism comprising a driven shaft, means including a clutch for connecting the driven shaft with the loom shaft and means controlled by said shuttle change mechanism for causing engagement of said clutch to initiate the operation of said driven shaft. 1

4. In a bobbin replenishing mechanism for looms having a drive shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a reciprocatory loading de-- vice having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine, advancing said loading device to deliver bobbins one-by-one to the magazine and returning the loading device to an initial retracted position, comprising a cam shaft, a clutch connecting said cam shaft with the loom shaft and means controlled b the shuttle change mechanism for engaging said clutch to initiate a cycle of operation of the cam shaft, said cam shaft having an intermittent driving connection with said magazine. I

5. In a bobbin replenishing mechanism for looms having a drive shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a reciprocatory loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine, advancing said loading device to deliver bobbins one-by-one to the magazine and returning the loading device to an initial retracted position, comprising a driven shaft having an intermittent driving connection with the magazine, means controlled by the shuttle change mechanism to initiate a cycle of operation of the driven shaft, and a cam shaft having a cam thereon operative in successive cycles of the driven shaft to impart successive advancing movements to said loading device, said cam being further operative in one of said cycles to effect the return of said device to its initial position.

6. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle '-change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine and actuating said loading device in timed relation to the movements of the magazine, said driving and control mechanism comprising a'driven shaft, means connecting said shaft to the 100111 shaft including a cluimh, clutch engaging means arranged for actuation by the loom drive shaft under the control of said shuttle change mecha= nism, and means operative at a predetermined point in the rotation of the driven shaft for disengaging said clutch.

'1. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a loading device having a series of bobbin receptacles and a driving and control mechanism for indexing said magazine and actuating said loading device in timed relation to the movements of the magazine, said driving and control mechanism comprising a driven shaft, means connecting said shaft to the loom shaft including a clutch, a clutch shifting member arranged for actuation by the loom shaft under the control of said shuttle change mechanism to initiate a cycle of operation of said driven shaft, and latch means for holding said clutch enga ed.

8. In a bobbin replenishing m for looms having a power driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a loading device having a series of bobbin receptacles and a driving and control mechanism for indexing said magazine and actuating said loading-device in timed relation to the movements of the magazine, said drivingandcontrolmechanis'mcomprisingadriven shaft, means connecting said shaft to the loom shaft including a clutch, a clutch shifting member arranged for actuation by the loom shaft under the control of said shuttle change mechanism to initiate a cycle of operation of said driven shaft, latch means for holding said clutch engaged, and means operative at a predetermined point in the rotation of said driven shaft for disengaging said latch means to cause disengagement of said clutch.

9. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine and actuating said loading device in timed relation to the movements of the magazine, said driving and control mechanism comprising a driven shaft, means connecting said driven shaft to the loom shaft including a clutch, spring means tending to engage said clutch, a clutch shifting member arranged for actuation by the loom drive shaft under the control of said shuttle change mechanism, said clutch shifting member being operative upon actuation to render said spring means effective to engage the clutch, and means operative after a predetermined cycle of rotation of the driven shaft to efl'ect a reverse shifting movement of said member to disengage said clutch and terminate said cycle. 7

10. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having. a, circumferential series of bobbin holders thereon, a loading device having a series of bobbin receptacles and a driving and control mechanism for indexing said magazine and actuating said loading device in timed relation to the movements of the magazine, said driving and control mechanism comprising a 13 driven shaft, means connecting said driven shaft to the loom shaft including a. clutch, spring means tending to-engage said clutch, a clutch shifting member arranged for actuation by the loom drive shaft under the control of said shuttle' change mechanism, said clutch shifting member being operatlveupon actuation to render said spring means effective to engage the clutch, other spring means energized in the clutch engaging movement of the shifting member, latch means'operative upon said shifting member to hold the shaft in, engaged position, and means operative at a predetermined point in the rotation of the driven shaft for disengaging said latch means so as to render said other spring means-effective to disengage the clutch against the action of, the first mentioned spring means.

11. In a bobbin replenishing mechanism for looms having apower driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a reciprocatory loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine, advancing said loading device to deliver bobbins one-by-one to the magazine and for returning the loading device to an initial retracted position, said driving and control mechanism comprising a driven shaft arranged for actuation by the loom shaft through a predetermined operating cycle under the control of said shuttle change mechanism and cam means governing the stepping and return movements of said loading device, said cam means being operative to impart successive advancing movements to the loading device in a predetermined number of successive cycles of the driven shaft and to return the device to an initial retracted position in the last of said cycles.

12. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle change mechanism, the combination of a rotatable magazine having a circumferential series of bobbin holders thereon, a-reciprocatory loading device having a series of bobbin receptacles, and a driving and control mechanism for indexing said magazine, advancing said loading device to deliver bobbins one-by-one to the magazine and for returning the loading device to an initial retracted position, said driving and control mechanism comprising a main shaft arranged for actuation by the loom shaft through a predetermined operating cycle under the control of said shuttle change mechanism, a cam shaft driven from said main shaft at a reduced speed such that for each revolution of the cam shaft the main shaft is rotated through a plurality of revolutions corresponding in number to the number of receptacles in said loading device, and a multilobed cam on said cam shaft operative to impart one stepping movement to the loading device for each cycle of rotation of the main shaft and to return the device to its retracted position in the last of said cycles.

13. A bobbin replenishing mechanism for looms having, in combination, a rotary magazine with a plurality of bobbin holders adapted to receive and support wound bobbins in a predetermined loading position and move the same out of such position, a loading rack mounted for movement radially of said magazine at said loading position and having a series of laterally opening receptacles releasably supporting a row of bobbins, means for imparting stepping movements to the rack and for returning the rack following the a 14 I delivery of the last bobbin in the row to the mazezine, and means Operative automatically upon the return of the rack to its initial position to supply a new row of bobbins to the rack comprising a support for a bobbin carrier having a row of pins for releasably holding a row of bobbins, said supporting means being positioned with respect to the magazine to support the carrier in a plane offset laterally with respect to the magazine, means. for indexing the bobbin carrier, and means operative in timed relation to said indexing means to impart a transverse shifting movement to the rack to position it for the reception of a row of bobbins preliminary to an indexing movement of the carrier and then return'the rack to disen age the bobbins from their respective pins and to position them for delivery to the magazine.

14. In a bobbin replenishing mechanism for looms, a loading rack having a series of receptacles for receiving and retaining a row of bobbins, means for supporting said rack for reciprocation in a predetermined path, means for advancing said rack to carry the bobbins one-byone into a predetermined loading position and thereafter return the rack to its initial position, means for supporting a bobbin carrier having a row of bobbin supporting pins with said row disposed parallel to said rack when the latter is in its initial position and at one side thereof, and means operative upon the rack when in its retracted position to shift the same laterally of said path into position to receive a row of bobbins on said carrier pins and then reversely into said path, said bobbin receptacles engaging with bobbins on said pins in such reverse movement of the rack to disen age the bobbins from the pins.

15. In a bobbin replenishing mechanism for looms, a rotary magazine having a plurality of bobbin holders thereon, a loadin rack having a series of receptacles for receiving and retaining a row of bobbins, means supporting said rack for movement in a predetermined path radiall of said magazine, said rack having an initially retracted position with respect to the magazine, means for supporting a pin board having a row of bobbin supporting pins thereon corresponding in number to the receptacles in said rack and disposed parallel to the rack laterally of said path,means for shifting said rack laterally of said path and into position to receive a row of bobbins supported on said pins and then reversely to disengage the bobbins from the pins, means operative following such reverse movement of the rack to advance the rack step-bystep to deliver the bobbins one-by-one to the magazine, and means for indexing the magazine in timed relation to the advance of the rack.

16. In a bobbin replenishin mechanism for looms, a rotary magazine having a series of bobbin holders thereon, a loading rack having a series of bobbin receptacles thereon, means supporting said rack for movement radially of the magazine and also transversely thereof, said rack having an initial retracted position relative to the magazine, means for imparting a transverse shifting movement to the rack when in retracted position and then reversely into its said initial position, means operative upon such transverse shifting of the rack to deliver thereto a row of bobbins, and means for indexing said rack and said magazine in timed relation to each other so as to deliver bobbins one-by-one to said magazine.

17. In a bobbin replenishing mechanism for looms, a rotary magazine having a series of bobbin holders thereon, a loading rack having a series of bobbin receptacles, means supporting said rack for movement in a predetermined path radially of the magazine and also for movement laterally of said path when in a predetermined retracted position with respect to the e, means operative when the rack is in its said retracted position to shift the same laterally and then reversely into said predetermined path, means operative while the rack is in such laterally shifted position to deliver thereto a row of bobbins, said rack receptacles being adapted to engage the bobbins so that upon the reverse shifting movement thereof the bobbins are carried with the rack, means for advancing the rack step-bystep to deliver bobbins one-by-one to the magazine and then returning the rack to its said retracted position, and means for indexing the magazine in timed relation to the stepping movements of the rack.

18. In a bobbin replenishing mechanism for looms, a loading rack having a series of receptacles for receiving and retaining a row of bobbins, means supporting said rack for reciprocation along a predetermined path and also laterally thereof when the rack is in a predetermined position, said supporting means for the rack comprising a member movable parallel to said path and a cross slide on said member, cam means for actuating said cross slide to shift the rack laterally of said path and then to return it to said path, means operative in the shifted position of the rack to deliver a row of bobbins to the rack, and means for advancing the rack stepby-step to carry said bobbins one-by-one into a predetermined loading position.

19. In a bobbin replenishing mechanism for looms having a power driven shaft and a shuttle change mechanism, a rotary magazine having a series of bobbin holders thereon, a bobbin loading rack having a series 01' bobbin receptacles for receiving and retaining a row of bobbins, means for supporting said rack for movement radially of the magazine and also laterally into a bobbin receiving position at one side of said path, means operative when the rack is in said receiving position to deliver a row of bobbins to said receptacles, and a driving and control mechanism including means for indexing said magazine, reciprocating said rack transversely of said path and for advancing said rack step-bystep in timed relation to the indexing of the magazine, said means including a driven shaft, means controlled by said shuttle change mechanism to initiate a cycle of operation of the driven shaft and cam means on the driven shaft for shifting the rack laterally, said cam means being operative only in the retracted position of the rack.

20. In a bobbin replenishingmechanism for looms, a loading rack having a series of bobbin receptacles, a support mounted for reciprocation along a predetermined path, a cross slide carrying said rack and mounted for movement on said support transversely of said path, cam means for imparting step-by-step advancing movements to said support and then returning the support to an initial retracted position, means for reciprocating said cross slide transversely of said path to carry said rack into a bobbin receiving position and then reversely into said path comprising a reciprocating actuator and means providing a disengageable connection between said actuator and said cross slide eiiective only when the rack occupies said predetermined retracted posi- 18 tion, the cam means for actuating the support and for reciprocating the cross slide being timed so that said connection is established as an incident to the return of the support to its said initial position.

21. In a bobbin replenishing mechanism for looms, a loading rack having a series of receptacles for receiving a row of bobbins, a support mounted for reciprocation along a predetermined path, a cross slide supporting said rack and mounted on said support for movement transversely thereof, a reciprocating actuator, and means on said cross slide operative only in a predetermined position of the rack to provide a connection with said actuator.

22. In a bobbin replenishing mechanism for looms, a slideway for a bobbin carrier having a plurality of recesses uniformly spaced apart in the direction of movement of the carrier on the -slideway, an indexing mechanism comprising releasing and positioning fingers respectively engageable in said recesses, power operated means for moving said releasing finger into engagement with one recess and then withdrawing it therefrom, spring means acting on the positioning finger tending to move it into engagement with another one of said recesses, and a one-way connection between said fingers operative in the movement of the releasing finger into engagement with its said recess to disengage the positioning finger from its recess, said releasing finger being dimensioned with respect to said recesses so as to permit movement of the bobbin carrier while the releasing finger is in engagement with its recess sufficient to prevent entry of the positioning finger into its recess under the influence of its spring upon the withdrawal of the releasing finger from its said recess.

23. In a bobbin replenishing mechanism for looms, a slideway for a bobbin carrier having a plurality of recesses uniformly spaced apart in the direction of movement of the carrier on the slideway, and means for indexing the bobbin carrier comprising releasing and positioning fingers respectively engageable in spaced recesses, a oneway connection between said fingers, power operated means ior moving said fingers conjointiy but in opposite directions, and spring means for moving the positioning finger independently so as to render it effective to engage and position the bobbin carrier following release by the releasing finger.

24. In a bobbin replenishing mechanism for looms, a slideway for a bobbin carrier having a plurality of recesses uniformly spaced apart in the direction of movement of the carrier on the slideway, and means for indexing the bobbin carrier comprising a positioning finger spring pressed for movement into one of said recesses, a releasing finger engageable with another one of the recesses, power operated cam means for actuating the releasing finger into and out of engagement with its recess, and means operative in the engaging movement only of the releasing finger to withdraw the positioning finger from its recess.

25. In a bobbin replenishing mechanism for looms having a reciprocating lay with a shuttle box thereon, a rotary magazine having a circumferential series of bobbin holders, means for indexing said magazine step-by-step to carry bobbins successively into a predetermined delivery position for transfer to the shuttle box, an end finder mounted for movement axially of a bobbin in said delivery position and operative to seize an end finding coil on the bobbin and to withdraw it therefrom, mea s for reciprocating said finder, and means operative in the withdrawal movement of the finder to impart a lateral shifting movement thereto, said reciprocating means being arranged for actuation in timed relation to the loom whereby the withdrawal movement of the finder occurs in the return movement of the loom lay.

26. In a bobbin replenishing mechanism for looms having a reciprocable lay, a rotary magazine having a series of bobbin holders thereon. means for indexing the magazine to carry said bobbins successively into a predetermined delivery position, an end finder having means for engaging with the tip end of a bobbin in said delivery position to seize an end finding coil thereon. a reciprocable support for said finder, power driven means for reciprocating said support to move the finder into and out of engagement with a bobbin in the delivery position, and means operative as an incident to the withdrawing movement of the finder to impart a lateral shifting movement thereto in the direction of return movement of the loom lay.

27. In a bobbin replenishing mechanism for looms, a rotary magazine having a series or bobbin holders thereon, means for indexing the magazine to carry said bobbins successively into a predetermined delivery position, an end finder having means for engagement with a tip end of a bobbin in said delivery position to seize an end finding coil thereon, a reciprocable and rotatable support having said finder mounted eccentrically thereof, power driven means for reciprocating said support to move the finder into and out of engagement with a bobbin in the delivery position, and means operative as an incident to the withdrawing movement 01' the finder to impart a lateral shifting movement thereto.

28. In a bobbin replenishing mechanism for looms, a rotary magazine having a series of bobbin holders thereon, means for indexing the magazine to carry said bobbins successively into a predetermined delivery position, an end finder having means for engagement with a tip end of a bobbin in said delivery position to seize an end finding coil thereon, a stationary supporting member, a sleeve mounted on said member for axial and rotary movement, means on said sleeve supporting said finder in laterally ofiset relation thereto, power -driven means for reciprocating said sleeve to move the finder into and out of engagement with a bobbin in the delivery position, and cam means operative as an incident to the movement of the sleeve in the withdrawing movement of the finder to impart a rotary movement to the sleeve and a lateral shifting movement to the finder.

BURT A. PETERSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

